When you critically heal with a single-target direct heal, you summon an Ancestral spirit to aid you, instantly healing the lowest percentage health friendly party or raid target within 40 yards.

Ancestral Awakening is a passive shaman ability learned at level 34 for those with the restoration specialization. When the shaman critically heals with a single-target healing spell, an ancestral spirit is summoned that heals the lowest health party member for 30% of the critical heal.

Patch changes

Patch 3.1.0 (14-Apr-2009): This talent now accounts for your ineffective healing, rather than effective.